Seasonal changes of violaxanthin cycle pigment de-epoxidation in wintergreen and evergreen plants

• Autorzy: Dymova O. , Golovko T.
• Języki publikacji: EN

Abstrakty

EN

We studied carotenoids composition and the activities of the xanthophylls pigments in evergreen conifers (Abies sibirica, Juniperus communis, Picea obovata) and dwarf-shrub (Vaccinium vitis-idaea), and in wintergreen herbaceous plants (Ajuga reptans, Pyrola rotundifolia) growing near Syktyvkar (61°67/N 50°77/E). The carotenoid pool consisted mainly of following xanthophylls: lutein (70%), neoxanthin (7-10%) and a xanthophylls cycle component - violaxanthin (3-15%). Zeaxanthin and antheraxanthin were found in conifer samples collected in December-March while in other species - during all year. A direct connection between xanthophyll pigment de-epoxidation level and light energy thermal dissipation was shown only for boreal conifer species. It is proposed that zeaxanthin plays a central role in the dissipation of excess excitation energy (nonphotochemical quenching) in the antenna of photosystem II (PSII). We conclude that the increase in the extent of de-epoxidation is beneficial for the retention of PSII activity for conifers in early spring and for herbs in summer.

• Wydawca: -
• Czasopismo: Acta Biochimica Polonica
• Rocznik: 2012
• Tom: 59
• Numer: 1
• Opis fizyczny: p.143-144,ref.

Twórcy

autor

Dymova O.

• Institute of Biology, Komi Science Centre, Ural Branch of Russian Academy of Sciences, Syktyvkar, Russia

autor

Golovko T.

Bibliografia

• Demmig-Adams B, Adams III WW (1992) Carotenoid composition in sun and shade leaves of plants with different life forms. Plant Cell Environ 15: 411-419.
• Demmig B, Winter K, Krűger A, Czygan FC (1987) Photoinhibition and zeaxanthin formation in intact leaves. A possible role of the xanthophyll cycle in the dissipation of excess light. Plant Physiol 84: 218-224.  
• Dymova OV, Golovko TK (2007) Pigments apparatus in Ajuga reptans plants as affected by adaptation to light growth conditions. Russ J Plant Phys 54: 39-45.
• Dymova OV, Grzyb J, Golovko TK, Strzalka K (2010) Characterization of pigment apparatus in winter-green and summer-green leaves of a shade-tolerant plant Ajuga reptans. Russ J Plant Phys 57: 755-763.
• Yatsco YN, Dymova OV, Golovko TK (2011) Violaxanthin cycle pigments de-epoxidation and thermal dissipation of light energy in three boreal species of evergreen conifer plants. Russ J Plant Phys 58: 169-173.
• Tayer SS, Bjőrkman O (1992) Carotenoid distribution and de-epoxidation in thylakoid pigment-protein complexes from cotton leaves and bundle-sheath cells of maize. Photosynth Res 33: 213-225.

Uwagi

PL

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